cheer_reward_widget.dart
2.87 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
import 'package:flutter/material.dart';
import 'package:lottie/lottie.dart';
import '../../utils/log_util.dart';
class CheerRewardWidget extends StatefulWidget {
final String lottieFile;
final double width;
final double height;
final bool isPlaying;
final VoidCallback onAnimationEnd;
const CheerRewardWidget({
Key? key,
required this.lottieFile,
required this.width,
required this.height,
required this.isPlaying,
required this.onAnimationEnd,
}) : super(key: key);
@override
_CheerRewardWidgetState createState() => _CheerRewardWidgetState();
}
class _CheerRewardWidgetState extends State<CheerRewardWidget>
with SingleTickerProviderStateMixin {
late final AnimationController _controller;
late final Future<LottieComposition> _futureComposition;
bool _isVisible = false;
static const String TAG = "CheerRewardWidget";
@override
void initState() {
super.initState();
_controller = AnimationController(vsync: this);
_loadComposition();
}
@override
void didUpdateWidget(CheerRewardWidget oldWidget) {
super.didUpdateWidget(oldWidget);
if (widget.isPlaying && !_controller.isAnimating) {
_startAnimation();
}
}
void _loadComposition() {
_futureComposition = _loadLottieComposition();
if (widget.isPlaying) {
_startAnimation();
}
}
Future<LottieComposition> _loadLottieComposition() async {
return AssetLottie(widget.lottieFile).load();
}
void _startAnimation() {
Log.d("$TAG ${identityHashCode(this)} _startAnimation");
setState(() {
_isVisible = true;
});
_futureComposition.then((composition) {
Log.d("$TAG ${identityHashCode(this)} _futureComposition.then duration=${composition.duration}");
_controller.duration = composition.duration;
_controller.forward().whenCompleteOrCancel(() {
if (mounted) {
setState(() {
_isVisible = false;
});
}
widget.onAnimationEnd(); // 调用外部回调函数
});
});
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Center(
child: SizedBox(
width: widget.width,
height: widget.height,
child: FutureBuilder<LottieComposition>(
future: _futureComposition,
builder: (context, snapshot) {
if (snapshot.hasData) {
final composition = snapshot.data!;
return Lottie(
composition: composition,
controller: _controller,
renderCache: RenderCache.raster,
width: widget.width,
height: widget.height,
);
} else {
return const SizedBox.shrink();
}
})),
);
}
}